Conversion of Hard Water to Soft Water by using Solar Concentrator Plate

Water is primary need of human being. There is 97.5 % of sea water while only 2.5 % of water is drinkable. According to research there will be 9 billion people on earth. In 20 years 47 % of world’s population will live in areas subjected to serious water issue due to worldwide population. Costlier conventional water purification process does not satisfy human beings requirement. By using convectional water purification process it is not possible to purify water continuously due to cost. By using solar energy which is available free we can purify the water .Solar technology offers great potential in terms of supplying the world’s energy needs. However, its current contribution to the world is still limited. The main factor is related to high initial cost of building the system. This paper will provide an up-to-date review of solar concentrators and their benefits to make solar technology affordable. It will also analyse on some of the existing solar concentrators used in the solar technology for the past four decades. Parabolic Dish Solar Concentrators have shown high conversion efficiencies and operating temperatures (around 750 0C at annual efficiency of 23%-29% peak). Solar concentrator for process heat requirements of community, industrial and commercial establishments is an emerging and exciting opportunity in India, which is gaining attention from scientists, engineers and developers. This paper traces development of Parabolic Dish Solar Concentrator Technology and explores scope of work in the field, with special focus on India.